Home / 3,120.29-4,672.15-1,886.03

Finding the Fourth Proportional to 3,120.29, 4,672.15 and 1,886.03

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Solution

The fourth proportional to 3,120.29, 4,672.15 and 1,886.03 is: 2,824.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.29 : 4,672.15 = 1,886.03 : x
  2. Step 2: Convert to fraction form
    3,120.29/4,672.15 = 1,886.03/x
  3. Step 3: Cross multiply
    3,120.29x = 4,672.15 × 1,886.03
  4. Step 4: Simplify right side
    3,120.29x = 8,811,815.06
  5. Step 5: Solve for x
    x = 8,811,815.06/3,120.29
  6. Step 6: Final answer
    x = 2,824.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.